Some children with severe combined immunodeficiency (SCID), a genetic disorder characterised by a reduced number of immune cells, have been treated using gene therapy. 

By the mid-1990s, when the Human Genome Project was in full swing, scientists were sequencing DNA using capillary sequencers.  

The fruit fly, also known as Drosophila melanogaster, has the longest history in genetics and research out of all the model organisms.